Journal
CIRCULATION JOURNAL
Volume 76, Issue 7, Pages 1563-1571Publisher
JAPANESE CIRCULATION SOC
DOI: 10.1253/circj.CJ-12-0717
Keywords
Brugada syndrome; Channelopathies; Implantable cardioverter-defibrillator; Sudden death; Ventricular fibrillation
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Brugada syndrome (BS) is a cardiac disorder characterized by typical ECG alterations, and it is associated with a high risk for sudden cardiac death (SOD), affecting young subjects with structurally normal hearts. The prevalence of this disorder is still uncertain, presenting marked geographical differences. The syndrome has a genetic basis, and several mutations have been identified in genes encoding subunits of cardiac sodium, potassium, and calcium channels, as well as in genes involved in the trafficking or regulation of these channels. Most BS patients are asymptomatic, but those who develop symptoms present with syncope and/or SOD secondary to polymorphic ventricular tachycardia and/or ventricular fibrillation. Risk stratification is still challenging, especially in cases of asymptomatic BS patients. This is a brief review of recent advances in our understanding of the genetic and molecular bases of BS, arrhythmogenic mechanisms and clinical course, as well as an update of the tools for risk stratification and treatment of the condition. (Circ J 2012; 76: 1563-1571)
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